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On the GHz Frequency Response in Nanocrystalline FeXN Ultra-Soft Magnetic Films

Published online by Cambridge University Press:  01 February 2011

N.G. Chechenin ,
C.B. Craus ,
A.R. Chezan ,
T. Vystavel ,
D.O. Boerma ,
J.Th. M. De Hosson  and
L. Niesen
N.G. Chechenin
Affiliation:
Materials Science Centre, University of Groningen, Nijenborgh 4, NL-9747 AG Groningen, The Netherlands
C.B. Craus
Affiliation:
Materials Science Centre, University of Groningen, Nijenborgh 4, NL-9747 AG Groningen, The Netherlands
A.R. Chezan
Affiliation:
Materials Science Centre, University of Groningen, Nijenborgh 4, NL-9747 AG Groningen, The Netherlands
T. Vystavel
Affiliation:
Materials Science Centre, University of Groningen, Nijenborgh 4, NL-9747 AG Groningen, The Netherlands
D.O. Boerma
Affiliation:
Materials Science Centre, University of Groningen, Nijenborgh 4, NL-9747 AG Groningen, The Netherlands
J.Th. M. De Hosson
Affiliation:
Materials Science Centre, University of Groningen, Nijenborgh 4, NL-9747 AG Groningen, The Netherlands
L. Niesen
Affiliation:
Materials Science Centre, University of Groningen, Nijenborgh 4, NL-9747 AG Groningen, The Netherlands
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Abstract

The periodicity and angular spread of the in-plane magnetization for ultrasoft nanocrystalline FeZrN films were estimated from an analysis of the ripple structure, observed in Lorentz transmission electron microscopy (LTEM) images. The influence of the micromagnetic ripple on the ferromagnetic resonance (FMR) width is analyzed using an approach based on the Landau-Lifshitz equation. A strong dependence of the resonance width on the magnetic moment dispersion is predicted. To a large extent this particular aspect explains the high frequency response in some of our films.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 720: Symposium H – Materials Issues for Tunable RF and Microwave Devices III , 2002 , H3.14
Copyright
Copyright © Materials Research Society 2002

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